Anise

A reasonable traditional digestive herb, though most of the evidence base is small and symptom-focused.

A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.

Small studies suggest anise may help functional dyspepsia, bloating, and some respiratory symptoms. The essential-oil fraction appears responsible for much of the spasm-relieving activity.

• May reduce bloating and post-meal discomfort
• Shows mild antispasmodic activity
• Often included in cough and throat formulas

Usually taken as tea or as 300-1000 mg/day of seed or extract equivalents.

• Heartburn
• Allergic reactions
• GI irritation from essential oil

Concentrated oils can irritate the GI tract and may trigger allergy in people sensitive to Apiaceae plants like fennel or celery.

Most human studies are small, short, or use standardized extracts rather than the raw herb.

• Recovery15
• Immunity10